Tool that can help migrate existing on-premise relational database to Azure table storage
This tool should understand the on-premise relational database schema and generate equivalent tables in Azure table storage (with rowkeys as current primary keys and partitionkeys based on the indexes on the current relational table).
Cory Fowler commented
Table Storage is a Non-Relational Table (based on Entity-Attribute-Value Model) your application would require code changes for the Data access logic to be able to query Table storage.
As it would be a useful tool, if you consider the code changes required you may want to automate the data transfer yourself using the Sync Framework [http://code.msdn.microsoft.com/sync].
Ravi Agarwal commented
If my application has limited SQL usage, this would be a great tool to get my application quickly migrated to work with Azure storage. Parallely, creating new features like indexes on attributes in table storage and supporting limited set of SQL constructs will increase the usability of table storage for such applications.